I'd like to get complementary output from a 555 timer. I've seen previous suggestions of using a D Flip Flop, which is a fine suggestion, however that halves the frequency at the outputs of the flip flop, so I'd have to double the 555 output frequency. Is there a better approach where I don't have to double the 555 frequency to get a complementary output?
I imagine doubling 555 frequency for semi-high frequency applications would increase power consumption and possibly be less stable, or less precise, if I approach the max frequency limit of the 555. Which, in my project, I would be getting close to the upper limit stated on the data sheet and that's why I'm interested in a solution that doesn't double the 555 frequency. i.e., I'd possibly have to look to a clock generator solution more complicated than a 555, capable of higher frequencies, which I'd like to avoid if I can.
If it matters, or if you're curious, I'm aiming for a 1.4 MHz complementary clock signal with a LMC555 (or something similar). Doubling that for the flip flop, makes the 555 output 2.8 MHz. fmax in the data sheet is 3 MHz, so very close to max.
Also, I do need some degree of adjustability of the output frequency. i.e., in the case of a 555, a trimmer capacitor to adjust the frequency.
EDIT: In the comments I mentioned I'm looking for fairly precise complements of the clock output signals, without much error between the two, and someone asked me to clarify this. So I'll say these complementary clock signals are to drive a differential RF (analog) mixer. I think any error between the complementary clock signals will distort the mixer output, however if I'm wrong on that, feel free to correct me.